Tubular drill for boring artesian wells



N M d 1. o 9) J. P; WINTZ.

TUBULAR DRILL FOR BORING ARTESIAN WELLS.

Patented Dec. 26, 1882.

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TINTTE STATES PATENT rrrcn.

JAMES P. \VINTZ, OF CHARLESTON, EST VIRGINIA.

TUBULAR DRILL FOR BORING ARTESIAN WELLS.

SPECIFICATION forming part of Letters Patent No. 269,768, dated December 26, 1882.

Application filed November 4, 1882. (N0 model.)

To all whom it may concern:

Be it known tnat'I, JAMES P. WINTZ, aciti zen of the United States, residing at Charleston, in the county of Kanawha and State of West Virginia, have invented certain new and useful Im provernents in Tubular Drills for Boring Artesian Wells; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention is intended for drilling solid rock in deep Artcsian wells and sinking shafts for mining purpose, and its object is to facilitate the drilling of a large bore with comparatively little cutting of the rock. It consists of a tubular drill-stock in which can be inserted, around thelowerend thereof, aseries ofremovable diillbits adapted to drill an annular hole, leaving a core in the center, byan up-and-down movement, such as is usually employed inboring deep Artesian wells, and in a series of devices, which may from time to time be substituted for said drill-bits, for breaking off and drawing up said core.

In the accompanying drawings, Figure l is a view in elevation of the tubular drill-stock, having the drill-bits inserted. Fig. 2 is a view of one of the drill-bits detached from the drillstock. Fig. 3 is-a similar view of a wedge for breaking off the core. Fig. 4 is a similar view of one of two (or more) gripping devices for raising the core. Fig.5 is a similar view of a shaft carrying a latch for holding a flatcurved spring within the drill-stock, close up against the inner surface thereof, and for releasing said spring when the drill-stock descends to the btottom of the bore. Fig. 6 is an inside view of a longitudinal section of the drillstock, having two gripping devices, Fig. 4, the flat spring and latch, Fig. 5, inserted. Fig. 7 is another inside view of a longitudinal section of the drill-stock, taken at right angles to that shown in Fig. 6, having the wedge, latch, and spring inserted, the latter being released from the latch.

'lhe'drill-stock A is provided on its outer surface with a series of longitudinal grooves for receiving the shanks of the drill-bits, or the breaking-off wedge and gripping and raising devices, as the case may be. In the drawings I have shown a drill-stock with four grooves for the drill-bits and other devices; but I do not limit myself to that number. I prefer to make said grooves a little wider at their upper than at their lower ends, and the shanks of the drill-bits, 820., ofa corresponding shape, forming a dovetail to prevent said shanks from being drawn down by the upward movement of the drill-stock. The drill-bits and breaking-01f and lifting devices are held firmly in place by a series of metal bands, 12 3, and the drill-stock is made slightly tapering upward on its outer surface, but the bore thereofshould be cylindrical. The shanks of the drill-bits, &c., are a little thicker at their lower than at their upper ends, so that they may be tightened in the grooves hydriving down the bands.

The drill-bits a are all precisely alike. The flatcurved spring 8 is detachable, and is not attached in drilling. It may be attached to the drill-stock at its upper end by any means that will render it readily attachable and detachable. v

When it becomes necessary to raise the core the drill-stock is drawn up and the drill-bits removed therefrom. The breaking-oft' wedge 10, gripping devices g, and the spring 8, (ifintended to be used,) with the latch l, are inserted and the spring confined flat against the inner surface ot'the drill-stock by the latch. The wedge projects a little lower than the grippers g, and the latch-shaft a little lower than the wedge. Said latch-shaft is movable up and down a short space, sliding under the bands. The drill-stock is then let down the bore, and when it reaches the bottom the wedge to will break off the core and the shaft of latch l, striking the bottom, will be driven upward sufficiently to release the latch from the spring, causing the latter to press against the core, and when the stock begins to rise the grippers y will take hold of the core and prevent it from falling out of the stock.

In some cases it will not be necessary to insert the springs, and in such case an additional gripper maybe inserted in lieu of the latch-shaft. In some other cases the wedge, spring 8, and latch l may be used without the grippers. The safer course, however, will be touse the wedge, grippers, and s ring all in combination.

purpose described.

4. In combination with the tubular grooved drill-stock, the wedge 20, two or more grippers, g, spring 8, and latch I, substantially as set forth.

5. In combination with the tubular grooved drill-stock, the wedge to, spring s, and latch l, substantially as and forthe purpose described.

In testimony whereof I afiix my signature in presence of two witnesses.

JAS. P. YVINTZ.

Witnesses:

FRANK Cox, V. S. DOBBINS. 

